dev_update_var — Switches the update of the variable window during program execution on or off.
dev_update_var( : : DisplayMode : )
dev_update_var specifies the behavior of the variable window
during program execution.
If DisplayMode is set to 'on', which is the default,
the contents of the variable window (iconic and control variables)
is updated each time a variable is modified by the program.
If the mode is 'off' the values of the control variables and the icons of the iconic variables are not updated before the execution stops.
For measuring the execution time of a sequence of operators all
update options should be switched off in order to reduce the
influence of the runtime of GUI updates in HDevelop.
For this the operators dev_update_pc, dev_update_time,
dev_update_var, and dev_update_window or the
procedures dev_update_on and dev_update_off
can be used.
This option can also be controlled via the Preferences dialog:
Edit -> Preferences
-> Runtime Settings
-> Update Variables.
This operator is not supported for code export.
DisplayMode (input_control) string → (string)
Mode for graphic output.
Default: 'off'
List of values: 'off', 'on'
If the values of the specified parameters are correct,
dev_update_var returns 2 (
H_MSG_TRUE)
. Otherwise, an
exception is raised and an error code returned.
dev_update_pc,
dev_update_window,
dev_update_time
Foundation